<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <a href="./product/add">添加商品</a> <br>
    <a href="./product/delete">删除商品</a> <br>
    <a href="./product/update">修改商品</a> <br>
    <a href="./product/list">查询商品</a> <br>

</body>
</html>